I have tested it with Ledger HW1. I put in working HW1, which was previously initialized by Ledger Chrome app. As a result, with some error messages it finished the process of generating addresses and finaly it seems to work. The problem is, it destroyed compatibility with Ledger Chrome app. It even does not work with Electrum BTC. I had to recover my HW1 from paper backup. So the question is, can I use one Ledger wallet for both BTC and LTC?
I have tested my HW1 with Electrum BTC, and it did not work after it was initialized with Ledger Chrome app.
So if it is possible to use one wallet for BTC and LTC, what combination of softwares should I use?